Ottawa to Chicago Time Difference
Chicago is 1 hour behind Ottawa. When it is noon in Ottawa, it is 11:00 in Chicago.
Toronto (UTC-4) → Chicago (UTC-5)
🕐 Interactive Time Explorer
When it's 08:00 in Ottawa, it's 07:00 in Chicago
Drag the slider to see corresponding times in both cities
🤝 Best Meeting Times
Ottawa & Chicago✓ Perfect Match (7 hours)
◐ Extended Hours (2 hours)
✈️ Travel Information
Distance
1,036 km
Est. Flight Time
~2.2h
Time Difference
-1h
Work Hours Overlap
7h
Excellent
🔴 Office Closed
Today 10:00
10:00 - 17:00
⏰ Quick Conversion
06:00
Ottawa
05:00
Chicago
09:00
Ottawa
08:00
Chicago
12:00
Ottawa
11:00
Chicago
15:00
Ottawa
14:00
Chicago
18:00
Ottawa
17:00
Chicago
21:00
Ottawa
20:00
Chicago
00:00
Ottawa
23:00
Chicago (-1)
03:00
Ottawa
02:00
Chicago
Frequently Asked Questions
How many hours is Ottawa ahead of Chicago?
Chicago is 1 hour behind Ottawa. When it is 12:00 noon in Ottawa, it is 11:00 in Chicago. Ottawa operates on America/Toronto (UTC-4), while Chicago uses America/Chicago (UTC-5).
What is the best time to call Chicago from Ottawa?
There are 8 hours of overlapping business time (9 AM–5 PM) between Ottawa and Chicago. The best window is 10:00–18:00 Ottawa time (09:00–17:00 in Chicago).
Does the Ottawa to Chicago time difference change throughout the year?
The time difference can shift by up to one hour when either city observes Daylight Saving Time (DST). DST transition dates differ between countries — typically March/April in the Northern Hemisphere and October in the Southern Hemisphere. Always verify the live difference above when scheduling important meetings near DST changeover dates.
Flying between Ottawa and Chicago
The distance between Ottawa and Chicago is approximately 1,036 km. A direct flight typically takes around 2.2 hours. Your arrival clock will show local Chicago time — use our Flight Time Calculator to predict exact arrival times.